Rabbits and gut issues

The Rabbit Gut
The stomach of an adult rabbit is very acidic (pre-weaning it is closer to neutral) - this is why the acid loving Lactobacillus acidophilus does well there. After a mixing process here food moves into the intestine where nutrients are absorbed.
As food leaves the intestine it goes through the ileocaecocolic junction, solids enter the haestra of the caecum where the ‘digesta’ is moved back and forth, settling and mixing. The indigestible fibre settles and is voided as faeces, the digestible portion is retained in the caecum where bacterial fermentation breaks down the non-fibre portion. Proteins, fatty acids and some vitamins are absorbed.

Normal feeding of rabbits?
Rabbits are absolute ‘evolved very specially for the purpose’ HERBIVORES. Because they are small they can’t store huge vats of crude fibre like horses and cattle so they keep it moving through the gut - extracting what they need. Gut motility is very important to rabbits as it allows them to process a lot of food without storage.
The fibre provides ‘grip’ for the gut to move food, without it the guts slow down.

What is bloat?
True bloat would be gas and liquid in the stomach as seen in a gastric dilatation due to blockage, usually due to a hair ball. This is obviously more of an issue with adult rabbits during or following moulting. Strangely since rabbits can’t vomit even their own saliva adds to the problem as this also builds up in the stomach.

The onset is usually sudden, the rabbit is in pain, depressed and not interested in food. The stomach will be bloated and feel strange. The usual site of the obstruction is in the small intestine.

This progresses rapidly to shock, and collapse and normally requires surgical treatment.

A high fibre diet minimises this condition.

What is ‘ME’ and how does it cause bloat?
This is much more important in younger rabbits and rabbits under stress. Mucoid enteropathy/enteritis or ‘ME’ can also show itself as a form of bloat where it develops quite slowly usually when the caecum becomes full and immobile. gas builds throughout the gut.

Mucoid enteropathy is a confused disease process, largely due to the confusing nature of rabbit digestion.

Classically it involves lots of mucus production in the colon and impaction (blockage) of the caecum. The cause is a mishmash of stress, diet, and infection.

It is most commonly in young rabbits especially associated with a stress factor such as transport.

Keeping fibre high in recently weaned animals is very important. Coccidiosis can be a factor in triggering it

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